your HOA may have allowed mgmt to authorize firemen to enter...
I'm in a condo/townhouse too.
The firemen may well have been authorized by your homeowner's association & its management.
Actually, you might not have a beef w/fire dept, but with HOA. And you might not have standing there if you read your condo agreement paperwork, CC&Rs, etc. when you signed when bought your place - though the description of leaving things unlocked/open is indeed horrifying (that may allow negligence charges...)
Since you mentioned 'condo' as part of your home's description, your townhouse/condo is most likely part of a homeowner's association (HOA), a "common interest" organization. [Some freestanding non-attached 'townhomes' are in slightly different form of "PUD" ownership. There, you own the structure, responsible for its repair, etc. just like a house but HOA is for groundskeeping, maintaining standards, etc. Usu these sorts of of HOA fees are far lower than regular condo fees since you have to take care of the townhome maintenance, insurance, etc. yourself.] But if your paperwork describes "condominium" ownership, then what I'm writing here generally applies; laws vary from state to state but are generally similar.
Again, read your CC&Rs and the paperwork you signed when you bought it.
Laws vary from state to state, and there are probably oddball properties around, but even though you "own" the condo, you really don't ! ! ! It's not quite like owning a home.
Instead, you do own the right to exclusively occupy/use the unit. A common statement describing condo owners is that they own "from the paint inwards". [And in many condos/townhomes, patios and yards and even garages sometimes are called 'exclusive use common areas' which allows some HOA control, so folks' patios don't become old tire repositories.]
But if there are 200 condos/townhomes in your development, I'm pretty sure your paperwork says something akin to "you own 1/200 undivided interest in XYZ Townhomes", with exclusive right to use Unit #X". That means you own a share of the project, with valuation the price you paid for your unit +/- market factors since time you bought.
You don't actually own Unit #X: the building and structure are, in fact, owned by the HOA! This is why the HOA has insurance on the structure, and you just have "condo insurance" which is much like renter's insurance - just protects the interior stuff.
As such, it's in the "common interest" of the developement [and the development owns the structure(s) itself] to repair, stop imminent danger to their property, etc. They'd be risking other people's joint shares NOT to do this. I would bet that there's indeed something like an 'emergency circumstances' clause in your paperwork/contract, etc that allows supervised intrusion to your condo/townhouse "in the event of emergency". Probably also something in there that you "hold harmless" your HOA.
HOA disputes can be very nasty. Also if there are suits against HOA and/or builder it can trigger red flags for future purchasers. A suit against your HOA could, in fact, at least temporarily reduce your and your neighbor's property values and reduce the number of folks that would want to buy a unit - condo complexes under litigation often signal 'danger' to buyers who want troublefree ownership - after all that's one reason why they bought a condo, not a house.
Someday, this will really come up in court for a criminal case. Some exigency will allow HOA to "open" a townhouse/condo, and LEOs can come in on a pretext - the LEOs will not have broken/entered w/o warrant because the HOA let them in.
And you may have signed your rights away to sue HOA when you bought the place.
Bill Wiese
San Jose, CA